Sintering apparatus.



S.A.KR0M; SINTERING APPARATUS. APPLIOATION'FILED APR.5,191&

Patentd Jan. 19, 1915 2SHEETS-SHBETZ.

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UOoooooOoooooododoo000002990000 uooooooooooo ,H0 u Uooooooooo Q 0900000 o u r eases: @A44/0 STEPHEN ARTHUR KROM, OF BIRVINGI-IAIY, ALABAMA. i

SINTERING .arrestare s.

Specification of Letters Patent.

Patented Jan. le), MM5.

appucation inea April 5, 1era. serial No. 759,129.

T0 all whom it may concern Be it known that I, S'rnri-nin ARTHUR Knorr, a citizen of the United States, rcsiding at Birmingham, county of` Jefferson, and State of Alabama, have invented certain new and useful lmp'rovernents in Sintering Apparatus, of which the following is a clear, full, and exact description.

This invention relates to apparatus such 'as 'used in performing the operation of sintering or 'fusing together fine particles of ore such as iron-ore and which apparatus is usually known in metallurgy as sintering apparatus. There are several such apparatuses in use at the present time in one of which a conveyer is used for running the ore in contact with a flame and in another form of which the sintering pan is provided with means for supporting a bed-ot ore which in situ is subjected to the action of a llame and in which a draft oi air is pro duced so as to facilite-ite the fusing.

The objects of my invention generally are to improve such sintering apparatus so that the process may be performed more expe ditiously and satisfactorily.

@ne of the specific objects ot' the invention is to provide means for preventing the space under the grate bars from iilling up and becoming clogged bythe accumulation of ne material falling through the grate bars.' y

Another specific object of the invention is to improve the draft so as not to interfere with the proper'action of the apparatus.

Another object of the invention is to pro-` vide means for equaliaing pan.

These being among the objects of the present invention., the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference tothe accompanying drawings showing a suitable embodiment of the invention, and in which- Figure l is a side elevation of a sintering apparatus illustrating the present improvement; Fig. Z is a Yside elevation of the pan and concomitant parts partly vin section; and viewed at a quarter turn 'from the corresponding parts shown in Fig. l; Fig. 3 4is a detail sectional view illustrating an improved joint; Fig. 4 is a plan view, ot' the pan and a part oi the' grate, the cover being removed, and Fig. 5 1s a plan view ot the draft in vthe the pan, cover and burner, a. portion of the cover being broken away.

leferring to the drawings, means such as beams l0 are shown for supj'iorting the pan ll, said pan being provided with trunnions. 12 which are journaled in bearing boxes 13 supported on said beams. Said pan 11 has preferably a. body which is of general conical form although .it may be' of pyramidal or equivalent form. The said pan is pro vided above its conical orother bottom with an upwardly extending portion 14 which forms the outer wall olf an ore chamber llla in which the ore is placed upon a suitable perforated support or grate 15 supported by said wall. Below the said grate the bottom of the pan surrounds a space 16 through which any material falling through the grate mayhdrop into a trap below,` as described later.

A preferably tight it cover 17 for the pan or lower sectionis provided and the same 1s equipped with -a series of burner tubes 18 preferably formed of gas-pipe and having jet oriticeslQ from which the gas, as producer gas, 'issues so that it may be ignited, and a flame projected upon the mass of ore supported upon the grate 15. These burner tubes 1S lead from a. supply-pipe 20 outside of the cover, and which furnishes a pivot 'for the cover and is journaled in suitable supports as 20"' arranged on the supporting frame l0. .The said supplypipe .20 may be parallel with the supporting trunnions of the sintering pan but it may be otherwise arranged. Said cover is preferably immovable laterally of the walls lll of the pan so that when it is in position and fitted snugly against said walls a par tial vacuum may be produced within the pan. .A chainor other flexible connection iss-attached toj the cover, and it .may be operated by afcounterwcight (not shown), the chain being led over a suitable pulley, so that the cover may be opened and closed with the least effort. b'

By' the construction shown, a sealed chamber isl'ormed above the grate as the said -cover fits on the pan or lower section in airtight manner, and being closed .no air can enter said chamber through the walls formed` by said cover or upper section and the pan or lower section.

A combined suction and discharge trunk leads from the smaller end of the open botmaaien tained in said pan.

5. In a sintermg apparatusgthe combina# tion of supporting means, a grated openbottomed sintering pan, having walls tending toldirect any material falling through ,f

its grate out through its open bottom, and means ,for pivoting said pan on said supporting? means, and a discharge trunk leading from said open bottom and being in two sections, one of .which is supported in fixed position relatively to the pan, and the other of which is carriedl by the pan and is adapted to 'form a joint with the upper end of said fixed section.

6e A grateI open-bottomed sintering pam,

having walls tending to direct any material falling throgh its grate out through its open bottpm,`and means on which said pan is movably mounted, in combinationwith a combinedl suction and discharge trunk in communication with said open bottom and being in two sections, one of which is supported in fixed position relatively to the pan,

vand the other of which is carried by the movable pan and is adapted to form a joint with the upper end of said ixed section.

7. A grated open-bottom sintering pan, having walls tending to direct any material falling through its grate out through its open bottom, in combination with a combined suction and discharge trunk in communication with said open bottom and be ing in two sections, one of which extends downward and is supported in fixed position relatively to the pan, and the other of which is carried by the pan and is adapted to form a joint with the upper end of said ixed sec tion, and suction means connected with the said fixed section of said trunk.

y 8. A grated open-bottomed-sintering pan, having walls tending to direct any material falling through its grate out through its open bottom, in combination with a movable closed cover provided with burners, and it-v ted in substantially air-tight manner against the upper edge of said pan, wherebyv the flame from said burners is concentrated directly onto the charge of ore on said grate and within the walls above said grate.

9. AA. grated open-bottomed sintering pan, having walls tending to direct any lmaterial falling through its grate out through its open bottom, in combination with a trap having an opening communicating with said open bottom and through which said material is discharged into said trap, and

means exerting a downward suction, ar

ranged in communication with the open-bottom of said pan at a point below said pan and between the said pan and the opening of said trap, whereby the suction air and said material are separated and conducted to separate points.

10. A grated open-bottomed sintering pan, having walls tending to direct any material falling through its grate out through its open bottom, and means on which said pan is movably mounted, in combination with a -trunk in communication with said open-bottom, and a joint between said pan and trunk adapted to be separated or closed at will by the movement of one of said parts, the line of separation being at an angle to the horizontal.

1l. A grated open-bottomed sintering pan, having walls tending to direct anymaterial falling through its grate out through its bottom, in combination with a downwardly extending combined suction and material discharge trunk in communication with said open bottom, said walls and trunk being clear of obstructions, and suction means connected with the outer end of'said trunk so as to exert an unobstructed downward suction through said trunk.

Signed at Birmingham,

Ala., this 31st day of March 1913.

l S. ARTHUR KROM. Witnesses:

M. LEE BoNNEn, A. J. Roms. 

